Heater



Fetented Dec. 11, 1928.

UNITED STATES 1,694,595 PATENT OFFICE.)

JAMES w. SL'ADE, OF new YORK, n. Y.;

HEATER,

Application filed July 5, 1927, Serial No. 203,390.

The present invention relates to new and useful improvements in heating devices, and

the construction and mode of operation of heaters employing a liquid or gaseous fuel burner with a view of increasing the etliciency of such devices. It is a further object of the invention to provide a heater in which a high degree of heat may be generated from a relatively small burner flame, the heat generated by the heater being thrown off by radiation.

With the above and otherobjects in view, which will appear as the nature of the inven- 7 tion is better understood, the invention contemplates broadly, a relatively long combustion or heat generating chamber, means for supplying heat thereto, and means for creatlng and maintaining artificial circulation of air through the combustion or heat generating chamber and'in the presence of the heat supplying means. i

Referring to the accompanying drawing, the figure therein illustrates partly in elevation and partly in section, one embodiment of the invention which has been successfully carried out in actual practice.

The device illustrated consists of a com lmstion chamber A, a flame-producing burner B, and an exhaust fan or blower C.

The combustion chamber A is continuous, and preferably comprises a plurality of lengths of pipe 10,which may be positioned in superposed relation, and suitably connected together by couplings 12 and relatively short lengths of pipe 1d.

Extending from one end of the main portion of the combustion chamber A, there is a length of pipe 16 which, although herein shown as having a right angular extension 18 which projects through a wall or the like 20, may be of any form necessary to suit any particular installation and it is therefore understood that the invention is not to be limited to any particular form of this por tion of the apparatus.

The exhaust fan or blower G is mounted in this portion of the apparatus, and is prefthe open end of the pipe section 22 and suberate.

said first-mentioned tubular member, said erably so arranged that it exhausts direct to atmosphere through the wall 20.

Carried by the opposite end of the, combustion chamber A, there is a pipe section 22 connected to the combustion chamber by a suitable coupling 24. In the present illustration of the invention'this pipe section 22 is of slightly larger diameter than the pipe sections 10 which form the combustion chamber A.

The burner B heretofore mentioned is preferably of the gas-burning type but any type of flame-producing burner may be used with good results. One type of burner which has been successfully used is the burner known 70 as the Bunsen type, and when thistype of burner is'employed, it is so positioned with respect to the combustion chamber that its nozzle end is slightly spaced with respect to stantially in alignment with the axis thereof. This spacing of the nozzle end of the burner with respect to the open end of the pipe sec tion 22 provides an annular space through which air may be drawn into the pipe section 22 and caused to circulate through the com bustion chamber A. i

In the operation of the heater, the exhaust fan or blower C is started which causes a circulation of air through the combustion chamher A, which circulation is maintained as long as the fan or blower G continues to op The burner B is next lighted, and the flame which is projected from the end of the burner, together with air, is drawn into the combustion chamber A through the open end of the pipe section 22 by the draft produced by the exhaust fan or blower C.

After the exhaust fan or blower C, and the burner B have been operating for a short length of time, the several sections 10 of pipe become exceedingly hot, and the heat generated therein is thrown off by radiation.

It is to be understood that the invention is not limited. to the form of the invention here, in shown but may be practiced in such various other formsas rightfully fall within the scope of the claim.

What is claimed as new is:

A heat generator comprising a relatively long tubular member of substantially uniform diameter, a second tubular member relatively shorter, and of larger diameter than second-mentioned tubular member being se- 10 cured to one end of the first-mentioned tubular member and having communication therewith, said second mentioned tubular member constituting a flame chamber having an open end, a fuel burner arranged adjacent the open endof the second-mentioned tubular member and adapted to project its flame in the direc tion of the open end of the second mentioned tubular member, and into the interior thereof 0 said burner being spaced with respect to the JAMES XV. SLADE. 

